Screw-propelled boat.



Na. 69|,258. Patented 1an. I4, |902,

HQT. GAY.

scREw PnoPELLED BOAT.

(Application lerl July 1B. 1901.

(No Model.)

UNITED I-IERMAN T. GAY, OE BALTIMORE, MARYLAND.

SCREW-PROPELLl-:D BOAT.

SPECIFICATION forming part of Letters Patent No. 691,258, dated January 14, 1902.

Application led J'uly 16, 1901.

T0 a/ZZ whom t may concern:

Be it known .that I, HERMAN T. GAY, of the city of Baltimore and State of Maryland, have invented certain Improvements in Screw-Propelled Boats, of which the followingis a specication.

This invention relates to certain improvements in that class of screw-propelled boats which are operated bya person seated therein, and preferably by foot-power, as will hereinafter fully appear.

In the further description of the said invention which follows reference is made to the accompanying drawings, forminga part hereof, and in Which- Figure 1 is an exterior side view of the improved screW-propelled boat. Fig. 2 is an enlarged partly-sectional side view of certain parts of the propelling apparatus, together with a portion of the bottom of the boat. Fig. 3 is a perspective view of parts of the propelling apparat-us. Fig. 4 is a cross-section of certain parts shown in Fig. 2. Fig. 5 is a top view of certain parts shown in Fig. 2.

Referring now tothe draWings,l is the boat, which may have any appropriate construction and shape. In the bottom of the boat is an opening 2, and under this opening is situated a flanged box 3. The box 3 is secured to the bottom 4 of the boat by means of a flange and bolts 5, which pass through it and the bedplate 6 of a frame 7, hereinafter described.

9 is the screw-propeller, and 10 its shaft, which is supported at its Outer end by the hanger l1. The inner end of the propellershaft passes through the box 3 and into a bearing 13. Water is excluded from the box 3 by means of an ordinary stuffing-box 14. On the propeller-shaft is secured the spiral gear-wheel 15, which is in mesh with the similar spiral gear-wheel 17 on a short countershaft 19, supported in bearing-boxes formed under the bed-plate On the counter-shaft 19 is fastened a sprocket-pinion 20.

The frame 7, before referred to, consists of two uprights 22, erected on the bed-plate 6, having at their upper ends a cross connectingpiece 23.

24 is the main driving-shaft of the propelling mechanism, supported in suitable bearings forming parts of the uprights 22. This Serial No. 68,467. (No modela shaft carries the driving sprocket-wheel 25, which imparts rotation to the sprocket-pinion 20 through the medium of the chain belt 29.

At the ends of, the driving-shaft 24 are cranks 30, the pins 31 of which are provided with rollers 32, which rest in gnideways 33, formed in the vibratory bars 35, pivoted to the connecting-piece 23 of the frame 7. Thev cranks 30 are preferably set Opposite each other, and the vibratory bars have hinged frame independently of the boat-bottom and the propeller-shaft.

The operator, seated on the seat 39, places his feet on the pedals 37 and by vibrating the bars35 eects the rapid rotation of the propeller-shaft and its screw.

I claim as my invention- A boat having an openingin its bottom, and a box situated under the said opening, cornbined with a propeller-shaft which enters the said box and is journaled therein, a spiral gear secured to the portion of the propellershaft which is Within the said box, a bedplate secured to the inner side of the boatbottoln and over the opening therein, a counter-shaftplaced at a right angle with the propeller-shaft and having its ends journaled inV bearings formed as parts of the said bedplate, a spiral gear tight on the said countershaft,a sprocket-Wheel tight on the said counter-shaft, a frame erected on the said bedplate carrying a driving-shaft with a tight sprocket-Wheel, a chain belt which connects the two sprocket-wheels, and means to rotate the main driving-shaf t and its sprocket-Wheel, substantially as,and for the purpose specified.

HERMAN T. GAY. Witnesses:

OREGON MILTON DENNIS, Es'rEP T. GOTT. 

